Improvement in drying bone-black



UNITED STATES PATENT OFFICE.

PETER FARLEY, OF NEW YORK, 'N. Y.

IMPROVEMENT IN DRYING- BONE-BLACK.

Specification forming part 0f Letters Patent No. 113,754, datccl April 18, 1871.

To all @ehem it may concern Be it known that I, PETER FARLEY, of New York city, in the county and State of New York, have invented a new and Improved Ap-v paratus for Drying Bone-Black; and I do hereby declarethat the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to'the accompanying drawing forming part of this specification.

Figure 1 represents a vertical longitudinal section of my improved apparatus for drying bone-black. Fig. 2 is a vertical transverse section of the same. view, partly in section, of the same.

Similar letters ot' reference indicate corresponding parts.

This invention relates to a new apparatus for drying bone-black used in sugarfrefineries and for other purposes, and consists in the arrangement of inclosed shelves to the outer side of a heating structure, so that said shelves may retain the matter to be dried and allow it to feed down slowly; also, in the general construction ot' apparatus. p

A in the drawing represents a structure put above a furnace or suitable heater used in sngar-relineries or other establishments. It is made of metal or other material, preferably with vertically-corrugated sides a a, which are slightly inclined, as shown in Fig. 2. Shelves b b are arranged within the structure A, perforated or open at alternate ends, as shown in Fig. 1. The heat from the furnace below enters the lower part of the structure A, and is, by the shelves b b, detained and caused to move in a zigzag course, until at the upper end of A it is, by a short vertical pipe, c, carried down to the chimneyT cl. The structure A is thus made a heater by the detention of the hot air or products of combustion passing through it.

Fig. 3 is an inverted plan- B B are a series ot' inclined slats arranged against the outer side of the heater A, above one another, as is clearly shown in Fig. 2. Their inner edges, which may be straight or scalloped parallel with the corrugations in the sides, are but a short distance from the latter. At the bottom the space between the slats and sides a is closed by flanges e e, which project from the heater, and are provided with lateral or longitudinal slides j', whereby apertures in said iianges are closed or opened to suitable extent.

The bone-black or other matter to be dried is placed upon the upper slat B, in contact with the heater, and is gradually fed down until it arrives thoroughly dried upon the plate @,whence it is discharged into the retort or receptacle below by opening the slidesf.

This apparatus serves to do awa-y with the laborious and expensive Hat driers heretofore used, and also with the dangerous process ot' drying while burning, whereby explosions are frequently occasioned.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. The inclined slats B B applied to the flanges e, and combined with the inclined slats t and heater, as described.

The above specification of my invention signed by me this 11th day of March, 1871.

PETER `FARLEY.

Witnesses:

GEO. W. MAEEE, T. MosHEu. 

